Move WorkersView and JobsView to Travis namespace

That way those views can be overriden easily
Move WorkersView and JobsView to Travis.SidebarView namespace

Travis.JobsView already exists, so I need to put those views in some
other namespace, but so that they're available without instantiating
SidebarView
update wooga
Merge branch 'master' of github.com:travis-ci/travis-web